Year	Percent
1950	9.47193
1955	9.52969
1960	9.19015
1965	10.00632
1970	11.53768
1975	11.92345
1980	11.74359
1985	12.68725
1990	11.47235
1995	10.76789
2000	9.19208
2005	9.5409
2010	11.13982
2015	10.93396
2020	9.79499
2025	8.60295
2030	8.54831
2035	8.46862
2040	8.18506
2045	7.81253
2050	7.43406
2055	7.11273
2060	6.87812
2065	6.67682
2070	6.48159
2075	6.28643
2080	6.12411
2085	5.9909
2090	5.88341
2095	5.79362
2100	5.70982