Year	Percent
1950	10.18874
1955	9.04661
1960	9.89276
1965	12.67944
1970	12.7806
1975	12.53427
1980	12.0226
1985	11.35111
1990	11.13168
1995	10.29444
2000	9.6085
2005	10.37977
2010	9.4415
2015	8.6149
2020	6.9654
2025	6.38334
2030	5.87647
2035	6.2459
2040	6.14806
2045	5.49053
2050	4.80004
2055	4.46968
2060	4.53217
2065	4.75119
2070	4.85828
2075	4.72155
2080	4.48844
2085	4.35983
2090	4.42473
2095	4.58763
2100	4.6972