Year	Percent
1950	11.62208
1955	11.25371
1960	11.07299
1965	12.60151
1970	12.72184
1975	13.06651
1980	12.15255
1985	11.14815
1990	12.12643
1995	13.81467
2000	14.93278
2005	13.79023
2010	12.17131
2015	11.84833
2020	12.6178
2025	12.97406
2030	12.91852
2035	12.34674
2040	11.6711
2045	11.33247
2050	11.23219
2055	11.07024
2060	10.72135
2065	10.27543
2070	9.86052
2075	9.57227
2080	9.36348
2085	9.12446
2090	8.82326
2095	8.47007
2100	8.17282