Year	Percent
1950	10.60442
1955	11.28348
1960	7.43047
1965	7.77833
1970	10.07819
1975	11.44838
1980	11.58114
1985	11.05491
1990	10.40861
1995	10.63155
2000	10.85292
2005	11.86526
2010	11.33768
2015	8.60208
2020	8.25037
2025	8.3267
2030	10.12481
2035	9.45705
2040	8.47719
2045	7.68912
2050	7.47504
2055	7.66388
2060	7.77492
2065	7.55806
2070	7.11454
2075	6.74129
2080	6.58139
2085	6.57258
2090	6.57398
2095	6.47282
2100	6.27983