Year	Percent
1950	14.04075
1955	13.13028
1960	8.23121
1965	13.94752
1970	11.24523
1975	13.80404
1980	12.6933
1985	8.39013
1990	8.86021
1995	8.42024
2000	8.5001
2005	7.86649
2010	7.36927
2015	6.57339
2020	6.29845
2025	6.25635
2030	6.16356
2035	5.92992
2040	5.59231
2045	5.29726
2050	5.16748
2055	5.18789
2060	5.21669
2065	5.16043
2070	5.02917
2075	4.90622
2080	4.8484
2085	4.86292
2090	4.89192
2095	4.88192
2100	4.82759