Year	Percent
1950	10.71294
1955	9.29738
1960	10.25875
1965	12.39915
1970	12.5684
1975	12.44819
1980	11.93834
1985	11.58955
1990	12.83372
1995	14.44958
2000	13.58618
2005	10.25892
2010	7.26251
2015	6.62894
2020	7.60923
2025	7.80957
2030	6.8483
2035	5.63482
2040	4.74725
2045	4.51481
2050	4.7312
2055	4.95204
2060	4.85753
2065	4.53177
2070	4.24817
2075	4.21101
2080	4.4074
2085	4.64827
2090	4.731
2095	4.6317
2100	4.47625