Year	Percent
1950	8.52694
1955	8.37236
1960	10.48458
1965	11.06781
1970	11.41382
1975	11.35596
1980	11.49073
1985	11.4423
1990	11.08046
1995	9.86584
2000	10.07968
2005	10.78501
2010	10.06847
2015	10.14995
2020	10.02665
2025	9.36186
2030	8.73249
2035	8.38723
2040	8.24925
2045	8.12769
2050	7.93555
2055	7.65322
2060	7.3422
2065	7.07072
2070	6.87082
2075	6.7126
2080	6.53343
2085	6.3226
2090	6.09984
2095	5.90679
2100	5.73802